Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference
Physical Review Letters Volume 95 Issue 21
Page 210506-1-210506-4
published_at 2005-11-18
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| File | |
| Title ( eng ) |
Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference
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| Creator |
Okamoto Ryo
Takeuchi Shigeki
Sasaki Keiji
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| Source Title |
Physical Review Letters
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| Volume | 95 |
| Issue | 21 |
| Start Page | 210506-1 |
| End Page | 210506-4 |
| Abstract |
We report the first experimental demonstration of an optical quantum controlled-NOT gate without any path interference, where the two interacting path interferometers of the original proposals [Phys. Rev. A 66, 024308 (2002); 65, 062324 (2002)] have been replaced by three partially polarizing beam splitters with suitable polarization dependent transmittances and reflectances. The performance of the device is evaluated using a recently proposed method [Phys. Rev. Lett. 94, 160504 (2005)], by which the quantum process fidelity and the entanglement capability can be estimated from the 32 measurement results of two classical truth tables, significantly less than the 256 measurement results required for full quantum tomography.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2005-11-18 |
| Rights |
Copyright (c) 2005 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.95.210506
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.95.210506
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